Peace through strength
Proponents of the design, acquisition and deployment of arms tend to believe, in the words of George Washington's 1790 State of the Union Address, that :"To be prepared for war is one of the most effectual means of preserving peace."
At times it has seemed that Washington's "one of the most" has been interpreted to mean "the only". This may be in part due to the influence of the various interest groups that actually benefit from conflict. For example, arms manufacturers, and "oilcos" (oil companies) require strong defenses to control oil producing regions and sell immense amounts of fuel for naval and aviation use.
However, there is a substantial argument for military preparedness or "peace through strength". Jane Jacobs observed that shows of strength are often thought to be required to maintain control. Niccolo Machiavelli thought that even acts of explicit cruelty might be required though leaders should take no joy in them. Then there is the argument that state power and the monopoly on violence are simply essential.
This view is however common only in the United Kingdom and United States, and more so in the latter, which has no experience of invasion by a foreign power.
Human security
In the human security perspective, nations prepare militarily only for the sake of interventions to make or keep peace, supervise elections or nation-building, disarm dictators, prevent genocide, or end ongoing terrorism.
Lester Pearson, founder of the UN Peacekeeping force, first advanced the human security agenda in Canada. Pearson was also an early and decisive advocate of the formation of the State of Israel in the early days of the UN.
Recently, R. J. Rummel presented what he considers to be definitive evidence that, in recent centuries:
- government-sponsored murder has killed more people than warfare
- increasing liberty decreases conflict
If this is the case, then actions to increase liberty and democracy would be justified in the name of peace. This tends to be the view of most Republican and Democratic Party power figures in the U.S. In other words, this intent makes an action more like to be a just war.
This view was widely influential and even decisive prior to the Iraq crisis . The peace movement had only muted criticisms of the NATO bombing of Yugoslavia or the U.S. invasion of Afghanistan. But it began to unravel when the G. W. Bush administration sought to expand its War on Terrorism to Iraq. Notably, Jean Chrétien, prime minister of Canada at the time and of the same Liberal Party of Canada as Pearson and Pierre Trudeau, sent more troops to Afghanistan and more ships to the Persian Gulf for the enforcement of UN sanctions on Iraq even as he rejected any Canadian involvement in the U.S. plan to invade Iraq. The distinction between disarmament, regime change and assassination seemed to have become blurred, from the perspective of human security agenda advocates.
It remains to be seen if it is in fact possible to keep such goals separate, while retaining the support of nation-states and multilateral bodies. Under threats such as new weapons of mass destruction, and nuclear proliferation, policymakers may feel forced to take action more rapidly than diplomacy and peacemaking can offer.